The evaluation of radon concentration and radon decay products concentrations using SSNTD in the U-exploration galleries in the eastern desert, egypt

Radon gas concentrations and the radon decay products concentrations were measured using different types of solid state nuclear track detectors (SSNTD) namely Cr-39, Mk, L R-115 and CN-85, three U-exploration galleries at qattar-I, Al missikat and Al aradiya areas, eastern desert, egypt. In each U-exploration gallery 10 monitoring stations were shoes to cover the differing intensities of the U-mineralization as well as the ventilation conditions and two sets of measurements were performed for the time intervals 27 days (spring) and 50 days (winter). The optimum etching conditions for each SSNTD used were investigated using 238Pu-source (6.06 X 103 Bq) with 5 collimators corresponding to 1-5 MeV α-energies